Josephson effect between electron-doped and hole-doped iron pnictide single crystals
Josephson effect between electron-doped and hole-doped iron pnictide single crystals
We have observed the Josephson effect in junctions formed between single crystals of SrFe1.74Co0.26As2 and Ba0.23K0.77Fe2As2. The ac Josephson effect was observed under microwave irradiation in the I-V characteristics. By applying an in-plane magnetic field, the critical current is completely modulated and shows a relatively symmetric diffraction pattern consistent with …